Combined sonic/pulsed neutron cased hole logging tool

ABSTRACT

A through casing formation evaluation tool string  1000, 2000, 3000  including a conveyance string  100,  a sonic array tool  200,  a pulsed neutron tool  400  and one or more downhole memory modules  160, 540, 550.  A method of through casing formation evaluation and casing and cementing integrity evaluation includes lowering a tool string into a cased wellbore; concurrently collecting data with the sonic array tool and pulsed neutron tool and transmitting at least a portion of the collected data via a conveyance string to a CPU located at the surface of the earth; storing a portion of the collected data in a memory module disposed in the tool string; removing the tool string from the wellbore; processing the collected data in the CPU to obtain selected rock property data about the one or more of the geologic formations and/or cement integrity.

CLAIM OF PRIORITY

This application is a continuation of and claims the benefit of priorityto U.S. patent application Ser No. 13/701,874, entitled “CombinedSonic/Pulsed Neutron Cased Hole Logging Tool”, filed on Aug. 12, 2013,which claims priority under 35 USC §365 (c) to International PatentApplication Serial No. PCT/US2010/049146, entitled “CombinedSonic/Pulsed Neutron Cased Hole Logging Tool”, filed on Sep. 16, 2010,which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

This disclosure relates to formation and casing evaluation tools andmethods of formation evaluation, and more particularly a combinationsonic and pulsed neutron tool for formation evaluation through casing,and casing and cementing integrity evaluation and methods for use forsame.

BACKGROUND

In many reservoirs throughout the world it is necessary to hydraulicallyfracture the reservoir to produce commercial quantities of oil and gas.In order to design such hydraulic fracture stimulation treatments it isdesirable to understand the in-situ stress profiles. To calculate thein-situ stress profile it is desirable to have mechanical rockproperties and pore pressure data in and around the target producingzones of the reservoir. Previously, it was necessary to obtain much ofthe needed data used in the stimulation designs with logs run in an openhole environment, while the well was being drilled, or in open holelogging runs after the desired interval had been penetrated and beforecasing had been placed in the wellbore. Obtaining the data in an openhole environment while the drilling rig is on location results in thewell operator incurring the cost of the drilling rig time while thelogging operation is conducted. Additionally, it is sometimes necessaryto remove the drill string and bit and then rerun the drill string andbit to the bottom of the hole and remove it again (aka “make a wipertrip in and out of the hole”) to circulate and condition the drillingfluids (aka “drilling mud”) to prepare the open hole for formationevaluation tools. This conditioning of the open hole results inadditional costs for the drilling fluids and additional rig time costs.Use of an open hole formation evaluation tool (aka “open hole logging”)has some risks. In highly deviated and/or horizontal wells it issometimes difficult to get the open hole formation evaluation tools (aka“logging tools”) to the portion of the wellbore in the desired geologicintervals, necessitating additional rig time and expense. It is alsopossible that the logging tools may become stuck in the wellbore whichmay necessitate expensive retrieval operations (aka “fishingoperations”) to retrieve the stuck logging tools. If the logging toolsare not able to be retrieved, it may be necessary to drill a replacementportion for the wellbore or even abandon the wellbore and drill a newwell.

A need exists for obtaining formation evaluation data (aka “log data”)to be used in wellbore design and hydraulic fracture stimulation designin an alternative manner to open hole logging. A further need exists fora cased hole combination logging tool for use in analyzing casing(s) andcement integrity in a well bore.

SUMMARY

The present disclosure provides an alternative through casing formationevaluation tool to open hole formation evaluation tools by combiningpulsed neutron and sonic technology in a mono-cable format for use in asingle cased hole logging run. This is an efficient and cost savingapproach to obtaining the desired formation evaluation data (aka “logdata”) for well design and hydraulic stimulation design and for a casedhole combination logging tool for use in analyzing casing(s) and cementintegrity in a wellbore. Since the wellbore is cased, the drilling rigmay be removed before a logging run using the tool of the presentdisclosure, and therefore considerable money is saved by avoiding therig time incurred during open hole logging. The combined tool and methodof the present disclosure also saves money by making only a single casedhole logging trip versus several trips necessary to obtain the datausing individual tools each in a single logging run. Risk of losinglogging tools in the well is minimized by using cased hole loggingversus open hole logging. It is generally easier to get the loggingtools to the desired geologic zones in a cased hole as opposed to anopen hole, especially in highly deviated or horizontal wellbores. Riskof losing tools in a cased hole is minimized by using a single loggingrun with the combination tool in the cased hole instead of multiple runswith single tools.

The data obtained with the combined tool of the present disclosureprovides formation measurements through casing(s) and cement. The toolsmay obtain data on casing(s) string and cement integrity; fluidssaturations and rock properties of the reservoir; including DTC(compressional slowness); DTS (shear slowness); minimum horizontalstress profile; porosity; simple mineralogy; matrix sigma; pseudodensity; and full wave information. The robustness of the gathered datais useful for optimal well design and for improved hydraulic fractureand acidization stimulation design and placement used in completing andstimulating the well and for determining the integrity of one or morecasing strings and cement in the wellbore.

In some embodiments, the combined tool string may be less than 3 inchesin outside diameter, thereby allowing for ease of conveyance of the toolstring in small internal diameter cased wellbores, tubing, drill pipeand within highly deviated and horizontal wellbores (aka “high dog leg”severity).

The combined pulsed neutron and sonic cased hole formation evaluationmay be accomplished in several ways: real time gathered data transmittedvia an electrical or fiber optic cable, or wired continuous rod; memorymode by storing a portion of the gathered data in memory module(s) inthe tool string and conveyed on above cables or slickline or wiredcontinuous rod; and in a hybrid telemetry method where a portion of thegathered data is transmitted via an electrical or fiber optic cable orcontinuous wired rod and a portion of the gathered data is stored in thememory modules(s) in the tool string and retrieved when the tool stringis removed from the wellbore.

The collected data is processed in a CPU at the surface to obtain morerobust rock property data about the one or more geologic formations. Therock properties are selected from the group consisting of Poisson'sRatio, Young's Modulus, compression slowness, shear slowness, minimumhorizontal stress profile and inelastic measurements leading to simplemineralogy and matrix sigma (Spwla_(—)2009_T), Sigma (or capturecross-section) and ratio measurement for porosity (SPE30597) and pseudodensity (SPE94716). The robustness of the processed rock property datais useful for optimal well design and for improved hydraulic fractureand acidization stimulation design and placement used in completing andstimulating the well and for determining the integrity of one or morecasing strings and cement in the wellbore.

The details of one or more embodiments of the invention are set forth inthe accompanying drawings and the description below. Other features,objects, and advantages of the invention will be apparent from thedescription and drawings, and from the claims.

DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic of a first implementation of a combination sonicand pulsed neutron tool for formation evaluation through casing;

FIG. 2 is a schematic of a second implementation of a combination sonicand pulsed neutron tool for formation evaluation through casing;

FIG. 3 is a schematic of a third implementation of a combination sonicand pulsed neutron tool for formation evaluation through casing; and

FIG. 4 is a functional schematic of possible combinations of theelements of a combination sonic and pulsed neutron tool and system.

Like reference symbols in the various drawings indicate like elements.

DETAILED DESCRIPTION

Referring now to FIG. 1, wherein there is illustrated a schematic of afirst embodiment of the combination logging tool string 1000 for useinside of a cased wellbore. The logging tool string 1000 is conveyedinto the wellbore on a conveyance string 100 which may include one ormore of the following: an electric and/or fiber optic cable 101; aslickline cable 102; a wired conveyance rod 103; coiled tubing string104; and a wired coiled tubing string (including electrical cable and/orfiber optics) 105. The tool string 1000 includes: a gamma ray/casingcollar telemetry module 110 connected to a first crossover tool 112. Asecond crossover tool 114 may be used to connect the first crossovertool to a first end 210 of a sonic array tool 200. The sonic array toolmay include centralizers 230. A third crossover tool 116 may be used toconnect a lower end 220 of the sonic array tool to a flexible sub 300(aka “serpentine or knuckle joint”) that allows decoupling of acentralized tool. A pulsed neutron tool 400 may be connected at a firstend 410 to a second end of the flexible sub 300. In some embodiments, inthe tool string 1000, the sonic array tool 200 is disposed above theflexible sub 300 and the pulsed neutron tool 400 is disposed below theflexible sub. Alternatively, the pulsed neutron tool 400 may be disposedabove the flexible sub 300 and the sonic array tool 200 may be disposedbelow the flexible sub 300. If the pulsed neutron tool 400 is below thesonic tool 200, a crossover tool 116 may be used to receive either atermination bull plug 119 at the lower end of the tool string or,alternatively, an additional crossover 120 may be attached to crossover116 to connect to additional tools (not shown) that may be used in thestring 1000. If the sonic tool 200 is positioned below the neutron tool400, then a crossover tool 118 may be used to receive either atermination bull plug 119 at the lower end of the tool string 1000 or,alternatively, an additional crossover 120 may be attached to crossover118 to connect to additional tools (not shown) that may be used in thestring 1000.

By way of example, a Halliburton mono-cable telemetry module model 1553may be used in combination with Halliburton's slim bore hole sonic arraytool (SBSAT) and Halliburton's pulsed neutron tool model RMT-i or TMD-3d(1553). The flexible sub 300 may be Halliburton's 6-6 flex connector. Itwill be understood that other telemetry modules and sonic array toolsand neutron tools and flexible subs manufactured and provided byHalliburton and/or other third parties may be used in implementations ofthe present disclosure.

By way of further explanation, the present disclosure as discussed abovemay use a continuous wired rod (103) that includes the features ofencapsulating fiber optic and/or copper wire within a smooth, round semirigid outer layer(s). The rigidity of the continuous wired rod may allowpushing/pulling tool strings, possibly eliminating mechanical tractors.

Referring now to FIG. 2, wherein there is illustrated a schematic of analternative implementation of the combination logging tool string 2000for use inside of a cased wellbore. The logging tool string 2000 isconveyed into the wellbore on a conveyance string 100 which may includeone or more of the following: an electric and/or fiber optic cable 101;a slickline cable 102; a wired conveyance rod 103 (see discussionhereinafter); coiled tubing string 104; and a wired coiled tubing string(including electrical cable and/or fiber optics) 105. The tool string2000 includes: a memory module 150 which is connected to a crossovertool 114. The memory module is connected to a first end 210 of a sonicarray tool 200. A crossover tool 116 may be used to connect the lowerend 220 of the sonic array tool to a flexible sub 300. A pulsed neutrontool 400 is connected at a first end 410 to a second end of the flexiblesub 300. In some embodiments in the tool string 1000, the sonic arraytool 200 is disposed above the flexible sub 300 and the pulsed neutrontool 400 is disposed below the flexible sub 300. Alternatively, thepulsed neutron tool 400 may be disposed above the flexible sub 300 andthe sonic array tool 200 may be disposed below the flexible sub 300. Ifthe pulsed neutron tool 400 is below the sonic tool 200, a crossovertool 116 may be used to receive either a termination bull plug 119 atthe lower end of the tool string or, alternatively, an additionalcrossover 120 may be attached to crossover 116 to connect to additionaltools (not shown) that may be used in the string 2000. If the sonic tool200 is positioned below the neutron tool 400, then a crossover tool 118may be used to receive either a termination bull plug 119 at the lowerend of the tool string or, alternatively, an additional crossover 120may be attached to crossover 118 to connect to additional tools (notshown) that may be used in the string 2000.

Referring now to FIG. 3, wherein is illustrated a schematic of analternative implementation of a combination logging tool string 3000.The alternative tool string 3000 is similar to the first embodiment ofthe combination logging tool string 1000 for use inside of a casedwellbore. The tool string 3000 is conveyed into the wellbore on aconveyance string 100 which may include one or more of the following: anelectric and/or fiber optic cable 101; a slickline cable 102; a wiredconveyance rod 103 or coiled tubing string 104; a wired coiled tubingstring (including electrical cable and/or fiber optics) 105. The toolstring 3000 may include: a gamma ray/casing collar telemetry module 110which is connected to a first crossover tool 112. A second crossovertool 114 may be used to connect the first crossover tool to a first end210 of a sonic array tool 200. A third crossover tool 116 may be used toconnect the lower end 220 of the sonic array tool to a flexible sub 300.A pulsed neutron tool 400 is connected at a first end 410 to a secondend of the flexible sub 300. In some embodiments in the tool string1000, the sonic array tool 200 is disposed above the flexible sub 300and the pulsed neutron tool 400 is disposed below the flexible sub 300.Alternatively, the pulsed neutron tool 400 may be disposed above theflexible sub 300 and the sonic array tool 200 may be disposed below theflexible sub 300. The alternative tool string 3000 further includes amemory module 150 connected to the sonic array tool 200 and may includea second memory module 150 connected to the pulsed neutron tool 400. Ifthe pulsed neutron tool 400 is below the sonic tool 200, a crossovertool 116 may be used to receive either a termination bull plug 119 atthe lower end of the tool string or, alternatively, an additionalcrossover 120 may be attached to crossover 116 to connect to additionaltools (not shown) that may be used in the string 2000. If the sonic tool200 is positioned below the neutron tool 400, then a crossover tool 118may be used to receive either a termination bull plug 119 at the lowerend of the tool string 3000 or, alternatively, an additional crossover120 may be attached to crossover 118 to connect to additional tools (notshown) that may be used in the string 3000.

Referring to FIG. 4, there is illustrated a functional schematic ofpossible combinations of the elements of a formations evaluation system500. The system may include a CPU 510 located at the surface. A monoconductor 512 may be used to transmit data up or down the mono-cable toor from the formations evaluation tools comprising the tool string whenthe tool string is lowered into a cased wellbore. The mono-cable isconnected to a telemetry module 514. A downhole tool bus 530 is includedin the tool string. A gamma ray casing collar module 520 may be includedin the string. A pulsed neutron module 522 and a sonic array module 524may be included as is illustrated in section 570 of the system. In ahybrid embodiment 580, memory bank modules 540 may receive and storedata from one or more of the gamma ray/casing collar tool 520, thepulsed neutron tool 522, and the slim array sonic tool 524;alternatively, an additional memory bank module 550 may be included inthe tool string system 500 to receive and store data from one or more ofthe gamma ray/casing collar tool 520, the pulsed neutron tool 522, andthe slim array sonic tool 524. The tool string may further include abattery pack and a memory CPU module 560.

The tool string 1000, as previously described, may be assembled byconnecting a conveyance string 100 to a gamma ray/casing collartelemetry module 110; connecting a flexible sub 300 at first end to asonic array tool 200; connecting a pulsed neutron tool 400 at a secondend of the flexible sub. Alternatively, the pulsed neutron tool 400 maybe disposed above the flexible sub 300 and the sonic array tool 200 maybe disposed below the flexible sub 300. In operation, the tool string islowered into the cased wellbore via the electric mono-cable. The toolstring is passed inside the well casing across one or more geologicformations which are outside the wellbore casing. Data is collected withthe sonic array tool and the pulsed neutron tool and transmitted via theelectric mono-cable to a CPU 510 located at the surface of the earth.The collected data is processed to obtain selected rock property dataabout the one or more geologic formations. The rock properties areselected from the group consisting of Poisson's Ratio, Young's Modulus,compression slowness, shear slowness, minimum horizontal stress profile,porosity, simple mineralogy, matrix sigma, and pseudo density.Additionally, the tool string 1000 may gather data for determining theintegrity of one or more casing strings and cement in the wellbore. Thepulsed neutron log may gather data on gas effect and fluid flow behindand between casing strings. The sonic tool may gather data on the cementbond between the casing and the cement and the cement and the formation.

The tool string 2000, as previously described, may be assembled byconnecting a slickline 102 or coiled tubing string 104 to a sonic arraytool 200. The flexible sub 300 is connected at one end to the sonicarray tool 200 and at a pulsed neutron tool 400 at a second end of theflexible sub. Alternatively, the pulsed neutron tool 400 may be disposedabove the flexible sub 300 and the sonic array tool 200 may be disposedbelow the flexible sub 300. In operation, the tool string 2000 islowered into the cased wellbore via the slickline or coiled tubingstring. The tool string is passed inside the well casing across one ormore geologic formations outside of the cased wellbore. Data iscollected with the sonic array tool and the pulsed neutron tool andstored in the memory module(s) 150. The tool string 2000 is removed fromthe wellbore and the collected data is retrieved from the memory module150 and processed to obtain selected rock property data about the one ormore geologic formations. The rock properties are selected from thegroup consisting of Poisson's Ratio, Young's Modulus, compressionalslowness, shear slowness, minimum horizontal stress profile, porosity,simple mineralogy, matrix sigma, and pseudo density. Additionally, thetool string 2000 may gather data for determining the integrity of one ormore casing strings and cement in the wellbore. The pulsed neutron logmay gather data on gas effect and fluid flow behind and between casingstrings. The sonic tool may gather data on the cement bond between thecasing and the cement and the cement and the formation.

A hybrid tool string 3000 may be assembled by connecting a conveyancestring 100 to a gamma ray/casing collar telemetry module 110; connectinga flexible sub 300 at first end to a sonic array tool 200; connecting apulsed neutron tool 400 at a second end of the flexible sub. A firstmemory module 150 may be connected to the pulsed neutron tool 400. Ifdesired, a second memory module 150 may be connected to the sonic tool200. Alternatively, the pulsed neutron tool 400 may be disposed abovethe flexible sub 300 and the sonic array tool 200 may be disposed belowthe flexible sub 300. In operation, the tool string 3000 is lowered intothe cased wellbore via the electric mono-cable. The tool string ispassed inside the casing across one or more geologic formations outsideof the cased wellbore. Data is collected with the sonic array tool andthe pulsed neutron tool and all or a portion of the collected data istransmitted via the electric mono-cable to a CPU 510 located at thesurface of the earth. A portion of the collected data may be stored inthe memory module(s) 150. The tool string is removed from the wellboreand the collected data is processed in combination with the datatransmitted to the surface via the mono-cable to obtain selected rockproperty data about the one or more geologic formations. The rockproperties are selected from the group consisting of Poisson's Ratio,Young's Modulus, compressional slowness, shear slowness, minimumhorizontal stress profile, porosity, simple mineralogy, matrix sigma,and pseudo density. Additionally, the tool string 300 may gather datafor determining the integrity of one or more casing strings and cementin the wellbore. The pulsed neutron log may gather data on gas effectand fluid flow behind and between casing strings. The sonic tool maygather data on the cement bond between the casing and the cement and thecement and the formation.

During operations of the combined tool string 1000, 2000, and 3000, datamay be gathered simultaneously in one pass across the geologicformations by the sonic array tool 200 and the pulsed neutron tool 400.Alternatively, data may be gathered selectively by either the pulsedneutron tool 400 or the sonic array tool 2000 as the tool string 1000,2000, and 3000 is passed one or more times across the selected geologicformation.

During operations of the combined tool string 1000, 2000, and 3000, dataon the casing and cement integrity may be gathered simultaneously in onepass across the casing by the sonic array tool 200 and the pulsedneutron tool 400. Alternatively, data may be gathered selectively byeither the pulsed neutron tool 400 or the sonic array tool 2000 as thetool string 1000, 2000, and 3000 is passed one or more times across theselected casing interval.

A number of implementations have been described. Nevertheless, it willbe understood that various modifications may be made. Accordingly, otherimplementations are within the scope of the following claims:

What is claimed is:
 1. A through casing formation evaluation tool, saidtool comprising: a conveyance string; a tool string including: a sonicarray tool and a pulsed neutron tool adapted to collect data about oneor more geologic formations located adjacent to a wellbore casing wallin a single pass of the tool string across the one or more geologicformations; and a flexible sub connected at a first end to the sonicarray tool and a second end of the flexible sub connected to a pulsedneutron tool.
 2. The formation evaluation tool of claim 1 wherein thetool string further includes at least one memory module.
 3. Theformation evaluation tool of claim 1 wherein the tool string furtherincludes memory module connected to the sonic array tool.
 4. Theformation evaluation tool of claim 1 wherein the tool string furtherincludes a memory module connected to the pulsed neutron tool.
 5. Theformation evaluation tool of claim 1 further including a gammaray/casing collar locator.
 6. The tool of claim 1 wherein the conveyancestring includes at least one of an electrical wireline cable, a fiberoptic cable, a slickline, a coiled tubing string, a wired coiled tubingstring and a continuous wired rod.
 7. The tool of claim 1 wherein thetool further gathers data that is processed in a CPU to determine casingand/or cement integrity.
 8. A method of through casing formationevaluation comprising: inserting a conveyance string with a tool stringconnected thereto into a cased wellbore having a wellbore casing walldisposed adjacent one or more geologic formations, said tool stringcomprising a sonic array tool, and a pulsed neutron tool; passing thetool string inside the wellbore casing across the one or more geologicformations located outside of and adjacent the wellbore casing wall;simultaneously collecting data through the wellbore casing wall aboutthe one or more geologic formations located adjacent to the wellborecasing wall with the sonic array tool and the pulsed neutron tool in asingle pass of the tool string across the one or more geologicformations; transmitting the collected data via the conveyance string toa CPU located at the surface of the earth; and processing the collecteddata from both the sonic array tool and the pulsed neutron tool toobtain selected rock property data about the one or more of the geologicformations.
 9. The method of claim 8 wherein the conveyance stringincludes at least one of an electrical wireline cable; a fiber opticcable; a slickline; a coiled tubing string; a wired coiled tubingstring; and a continuous wired rod.
 10. The method of claim 8 whereinthe rock property is selected from the group consisting of Poisson'sRatio, Young's Modulus, compressional slowness, shear slowness, minimumhorizontal stress profile, porosity, simple mineralogy, matrix sigma,and pseudo density.
 11. The method of claim 8 further including: passingthe tool string inside the wellbore casing across at least one selectedcased hole interval; collecting data with the sonic array tool regardingcement bond and the pulsed neutron tool regarding at least one of gaseffect or fluid flow outside a wellbore casing wall proximal to the atleast one cased hole interval and transmitting the collected data viathe conveyance string to a CPU located at the surface of the earth; andprocessing the collected data from both the sonic array tool and thepulsed neutron tool to obtain selected data for determining casing andcement integrity about the at least one selected cased hole interval.12. The method of claim 8 wherein processing the collected datacomprises deriving a rock property determined from the collected datawherein the rock property is selected from the group consisting ofPoisson's Ratio, Young's Modulus, compressional slowness, shearslowness, minimum horizontal stress profile; and wherein the methodfurther comprises designing hydraulic fracture and/or acidizationstimulation and placement using one or more of the derived rockproperties.
 13. The method of claim 8 wherein processing the collecteddata comprises: deriving a rock property determined from the collecteddata wherein the rock property is selected from the group consisting ofporosity, simple mineralogy, matrix sigma, pseudo density; and whereinthe method further comprises determining hydrocarbon saturations inselected intervals and designing hydraulic fracture and/or acidizationstimulation and placement using the determined hydrocarbon saturations.14. A method of through casing formation evaluation comprising:inserting a conveyance string with a tool string connected thereto intoa cased wellbore, said tool string comprising at least one memorymodule, a sonic array tool, and a pulsed neutron tool; passing the toolstring across one or more geologic formations located outside of andadjacent to a wellbore casing wall of the cased wellbore; simultaneouslycollecting data through the wellbore casing wall with the sonic arraytool and the pulsed neutron tool about the one or more geologicformations located adjacent to the wellbore casing wall in a single passof the tool string across the one or more geologic formations; storingthe data in the memory module; removing the tool string from thewellbore; loading the collected data stored in the at least one memorymodule in a CPU located at the surface of the earth; and processing thecollected data from both the sonic array tool and the pulsed neutrontool in a CPU located at the surface of the earth to obtain selectedrock property data about the one or more geologic formations.
 15. Themethod of claim 14 further including: passing the tool string inside thewellbore casing across at least one selected cased hole interval;collecting data with the sonic array tool regarding cement bond and thepulsed neutron tool regarding at least one of gas effect or fluid flowoutside a wellbore casing wall proximal to the at least one cased holeinterval and storing a portion of the collected data in the at least onememory module disposed in the tool string; removing the tool string fromthe wellbore; loading the collected data stored in the at least onememory module in a CPU located at the surface of the earth; andprocessing the collected data from both the sonic array tool and thepulsed neutron tool in the CPU located at the surface of the earth toobtain selected data for determining casing and cement integrity aboutthe at least one selected cased hole interval.
 16. The method of claim14 wherein processing the collected data comprises deriving a rockproperty determined from the collected data wherein the rock property isselected from the group consisting of Poisson's Ratio, Young's Modulus,compressional slowness, shear slowness, minimum horizontal stressprofile; and wherein the method further comprises designing hydraulicfracture and/or acidization stimulation and placement using one or moreof the derived rock properties.
 17. The method of claim 14 whereinprocessing the collected data comprises: deriving a rock propertydetermined from the collected data wherein the rock property is selectedfrom the group consisting of porosity, simple mineralogy, matrix sigma,pseudo density; and determining hydrocarbon saturations in selectedintervals and designing hydraulic fracture and/or acidizationstimulation and placement using the determined hydrocarbon saturations.18. A method of through casing formation evaluation comprising:inserting a conveyance string with a tool string connected thereto intoa cased wellbore, said tool string comprising a sonic array tool and apulsed neutron tool and at least one memory module; passing the toolstring inside the wellbore casing across one or more geologic formationslocated outside of and adjacent to a wellbore casing wall;simultaneously collecting data through the casing wall with the sonicarray tool and the pulsed neutron tool about the one or more geologicformations located outside of and adjacent to the wellbore casing wallin a single pass of the tool string across the one or more geologicformations; transmitting at least a portion of the collected data viathe conveyance string to a CPU located at the surface of the earth;storing at least a portion of the collected data in the at least onememory module; removing the tool string from the wellbore; loading thecollected data stored in the at least one memory module in a CPU locatedat the surface of the earth; and processing the collected data from boththe sonic array tool and the pulsed neutron tool in the CPU located atthe surface of the earth to obtain selected rock property data about theone or more geologic formations.
 19. The method of claim 18 furtherincluding: passing the tool string inside the wellbore casing across atleast one selected cased hole interval; collecting data with the sonicarray tool regarding cement bond and the pulsed neutron tool regardingat least one of gas effect or fluid flow outside a wellbore casing wallproximal to the at least one cased hole interval and storing a portionof the collected data in the at least one memory module disposed in thetool string; removing the tool string from the wellbore; loading thecollected data stored in the at least one memory module in a CPU locatedat the surface of the earth; and processing the collected data from boththe sonic array tool and the pulsed neutron tool in the CPU located atthe surface of the earth to obtain selected data for determining casingand cement integrity about the at least one selected cased holeinterval.
 20. The method of claim 18 wherein processing the collecteddata comprises deriving a rock property determined from the collecteddata wherein the rock property is selected from the group consisting ofPoisson's Ratio, Young's Modulus, compressional slowness, shearslowness, minimum horizontal stress profile; and wherein the methodfurther comprises designing hydraulic fracture and/or acidizationstimulation and placement using one or more of the derived rockproperties.
 21. The method of claim 18 further including groupingintervals for stimulation and selection of perforation intervals forhydraulic fracturing initiation points.
 22. A through casing formationevaluation tool, said tool comprising: a conveyance string; and a toolstring including: a sonic array tool and a pulsed neutron tool adaptedto collect data about one or more geologic formations located adjacentto a wellbore casing wall in a single pass of the tool string across theone or more geologic formations; and wherein the tool is adapted tocollect data simultaneously in a single pass.
 23. A method of throughcasing formation evaluation comprising: inserting a conveyance stringwith a tool string connected thereto into a cased wellbore having awellbore casing wall disposed adjacent one or more geologic formations,said tool string comprising a sonic array tool, and a pulsed neutrontool; passing the tool string inside the wellbore casing across the oneor more geologic formations located outside of and adjacent the wellborecasing wall; collecting data through the wellbore casing wall about theone or more geologic formations located adjacent to the wellbore casingwall with the sonic array tool and the pulsed neutron tool in a singlepass of the tool string across the one or more geologic formations;transmitting the collected data via the conveyance string to a CPUlocated at the surface of the earth; and processing the collected datafrom both the sonic array tool and the pulsed neutron tool to obtainselected rock property data about the one or more of the geologicformations, wherein processing the collected data comprises deriving arock property determined from the collected data wherein the rockproperty is selected from the group consisting of Poisson's Ratio,Young's Modulus, compressional slowness, shear slowness, minimumhorizontal stress profile; and designing hydraulic fracture and/oracidization stimulation and placement using one or more of the derivedrock properties, wherein designing includes: identifying ductile andbrittle intervals in the one or more geologic formations; andidentifying and grouping intervals of the one or more geologicformations together for hydraulic fracture stimulation in a singlestage.
 24. The method of claim 23 wherein grouping intervals forstimulation further includes selection of perforation intervals forhydraulic fracturing initiation points.
 25. A method of through casingformation evaluation comprising: inserting a conveyance string with atool string connected thereto into a cased wellbore having a wellborecasing wall disposed adjacent one or more geologic formations, said toolstring comprising a sonic array tool, and a pulsed neutron tool; passingthe tool string inside the wellbore casing across the one or moregeologic formations located outside of and adjacent the wellbore casingwall; collecting data through the wellbore casing wall about the one ormore geologic formations located adjacent to the wellbore casing wallwith the sonic array tool and the pulsed neutron tool in a single passof the tool string across the one or more geologic formations;transmitting the collected data via the conveyance string to a CPUlocated at the surface of the earth; processing the collected data fromboth the sonic array tool and the pulsed neutron tool to obtain selectedrock property data about the one or more of the geologic formations;passing the tool string inside the wellbore casing across at least oneselected cased hole interval; collecting data with the sonic array toolregarding cement bond in the selected cased hole interval; andprocessing the collected data from the sonic array tool in the CPUlocated at the surface of the earth to obtain selected data fordetermining cement integrity about the at least one selected cased holeinterval; determining if there is hydraulic zonal isolation betweenportions of the selected cased hole interval; and selecting intervalsfor selective staging of hydraulic stimulation based on the determinedhydraulic zonal isolation.
 26. A method of reducing total well drillingand completion costs comprising: drilling a well bore to total depth;running a string of casing to total depth in the well without running anopen hole sonic and pulsed neutron log in an open hole portion of thewellbore; cementing said string of casing in the wellbore to form acased wellbore; inserting a conveyance string with a tool stringconnected thereto into the cased wellbore, said cased wellbore having awellbore casing wall disposed adjacent one or more geologic formations,said tool string comprising a sonic array tool, and a pulsed neutrontool; passing the tool string inside the cased wellbore casing acrossthe one or more geologic formations located outside of and adjacent thewellbore casing wall; simultaneously collecting data in a single passthrough the wellbore casing wall about the one or more geologicformations located adjacent to the wellbore casing wall with the sonicarray tool and the pulsed neutron tool and transmitting the collecteddata via the conveyance string to a CPU located at the surface of theearth; processing the collected data from both the sonic array tool andthe pulsed neutron tool to obtain selected rock property data about theone or more of the geologic formations; designing hydraulic fractureand/or acidization stimulation design and placement using the selectedrock properties; and conducting completion operations on the wellbore,said completion operations comprising conducting the fracture and/oracidization stimulation in accordance with the design.
 27. The method ofclaim 26 wherein stimulation design and placement comprises identifyingductile and brittle intervals in the one or more geologic formations andidentifying and grouping intervals of the one or more geologicformations together for stimulation in a single stage.
 28. A method ofreducing total well drilling and completion costs comprising: drilling awell bore to total depth; running a string of casing to total depth inthe well without running an open hole sonic and pulsed neutron log in anopen hole portion of the wellbore; cementing said string of casing inthe wellbore to form a cased wellbore; inserting a conveyance stringwith a tool string connected thereto into the cased wellbore, said casedwellbore having a wellbore casing wall disposed adjacent one or moregeologic formations, said tool string comprising a sonic array tool, anda pulsed neutron tool; passing the tool string inside the cased wellborecasing across the one or more geologic formations located outside of andadjacent the wellbore casing wall; collecting data in a single passthrough the wellbore casing wall about the one or more geologicformations located adjacent to the wellbore casing wall with the sonicarray tool and the pulsed neutron tool and transmitting the collecteddata via the conveyance string to a CPU located at the surface of theearth; processing the collected data from both the sonic array tool andthe pulsed neutron tool to obtain selected rock property data about theone or more of the geologic formations; designing hydraulic fractureand/or acidization stimulation design and placement using the selectedrock properties; conducting completion operations on the wellbore, saidcompletion operations comprising conducting the fracture and/oracidization stimulation in accordance with the design; passing the toolstring inside the wellbore casing across at least one selected casedhole interval; collecting data with the sonic array tool regardingcement bond in the selected cased hole interval; and processing thecollected data from the sonic array tool in the CPU located at thesurface of the earth to obtain selected data for determining cementintegrity about the at least one selected cased hole interval;determining if there is hydraulic zonal isolation between portions ofthe selected cased hole interval; and selecting intervals for selectivestaging of hydraulic stimulation based on the determined hydraulic zonalisolation.
 29. A method of through casing formation evaluationcomprising: inserting a conveyance string with a tool string connectedthereto into a cased wellbore, said tool string comprising at least onememory module, a sonic array tool, and a pulsed neutron tool; passingthe tool string across one or more geologic formations located outsideof and adjacent to a wellbore casing wall of the cased wellbore;collecting data through the wellbore casing wall with the sonic arraytool and the pulsed neutron tool about the one or more geologicformations located adjacent to the wellbore casing wall in a single passof the tool string across the one or more geologic formations; storingthe data in the memory module; removing the tool string from thewellbore; loading the collected data stored in the at least one memorymodule in a CPU located at the surface of the earth; and processing thecollected data from both the sonic array tool and the pulsed neutrontool in a CPU located at the surface of the earth to obtain selectedrock property data about the one or more geologic formations; anddesigning hydraulic fracture and/or acidization stimulation andplacement using one or more of the derived rock properties, whereindesigning includes: identifying ductile and brittle intervals in the oneor more geologic formations, and identifying and grouping intervals ofthe one or more geologic formations together for hydraulic fracturestimulation in a single stage.
 30. The method of claim 29 whereingrouping intervals for stimulation further includes selection ofperforation intervals for hydraulic fracturing initiation points.
 31. Amethod of through casing formation comprising: inserting a conveyancestring with a tool string connected thereto into a cased wellbore, saidtool string comprising at least one memory module, a sonic array tool,and a pulsed neutron tool; passing the tool string across one or moregeologic formations located outside of and adjacent to a wellbore casingwall of the cased wellbore; collecting data through the wellbore casingwall with the sonic array tool and the pulsed neutron tool about the oneor more geologic formations located adjacent to the wellbore casing wallin a single pass of the tool string across the one or more geologicformations; storing the data in the memory module; removing the toolstring from the wellbore; loading the collected data stored in the atleast one memory module in a CPU located at the surface of the earth;and processing the collected data from both the sonic array tool and thepulsed neutron tool in a CPU located at the surface of the earth toobtain selected rock property data about the one or more geologicformations passing the tool string inside the wellbore casing across atleast one selected cased hole interval; collecting data with the sonicarray tool regarding cement bond in the selected cased hole interval;and processing the collected data from the sonic array tool in the CPUlocated at the surface of the earth to obtain selected data fordetermining cement integrity about the at least one selected cased holeinterval; determining if there is hydraulic zonal isolation betweenportions of the selected cased hole interval; and selecting intervalsfor selective staging of hydraulic stimulation based on the determinedhydraulic zonal isolation.
 32. A method of through casing formationevaluation comprising: inserting a conveyance string with a tool stringconnected thereto into a cased wellbore, said tool string comprising asonic array tool and a pulsed neutron tool and at least one memorymodule; passing the tool string inside the wellbore casing across one ormore geologic formations located outside of and adjacent to a wellborecasing wall; collecting data through the casing wall with the sonicarray tool and the pulsed neutron tool about the one or more geologicformations located outside of and adjacent to the wellbore casing wallin a single pass of the tool string across the one or more geologicformations; and transmitting at least a portion of the collected datavia the conveyance string to a CPU located at the surface of the earth;storing at least a portion of the collected data in the at least onememory module; removing the tool string from the wellbore; loading thecollected data stored in the at least one memory module in a CPU locatedat the surface of the earth; and processing the collected data from boththe sonic array tool and the pulsed neutron tool in the CPU located atthe surface of the earth to obtain selected rock property data about theone or more geologic formations; identifying ductile and brittleintervals in the one or more geologic formations; and identifying andgrouping intervals of the one or more geologic formations together forhydraulic fracture stimulation in a single stage.
 33. A method ofthrough casing formation evaluation comprising: inserting a conveyancestring with a tool string connected thereto into a cased wellbore, saidtool string comprising a sonic array tool and a pulsed neutron tool andat least one memory module; passing the tool string inside the wellborecasing across one or more geologic formations located outside of andadjacent to a wellbore casing wall; collecting data through the casingwall with the sonic array tool and the pulsed neutron tool about the oneor more geologic formations located outside of and adjacent to thewellbore casing wall in a single pass of the tool string across the oneor more geologic formations; and transmitting at least a portion of thecollected data via the conveyance string to a CPU located at the surfaceof the earth; storing at least a portion of the collected data in the atleast one memory module; removing the tool string from the wellbore;loading the collected data stored in the at least one memory module in aCPU located at the surface of the earth; and processing the collecteddata from both the sonic array tool and the pulsed neutron tool in theCPU located at the surface of the earth to obtain selected rock propertydata about the one or more geologic formations and deriving a rockproperty determined from the collected data wherein the rock property isselected from the group consisting of porosity, simple mineralogy,matrix sigma, pseudo density; and determining hydrocarbon saturations inselected intervals and designing hydraulic fracture and/or acidizationstimulation and placement using the determined hydrocarbon saturations.34. A method of through casing formation evaluation comprising:inserting a conveyance string with a tool string connected thereto intoa cased wellbore, said tool string comprising a sonic array tool and apulsed neutron tool and at least one memory module; passing the toolstring inside the wellbore casing across one or more geologic formationslocated outside of and adjacent to a wellbore casing wall; collectingdata through the casing wall with the sonic array tool and the pulsedneutron tool about the one or more geologic formations located outsideof and adjacent to the wellbore casing wall in a single pass of the toolstring across the one or more geologic formations; and transmitting atleast a portion of the collected data via the conveyance string to a CPUlocated at the surface of the earth; storing at least a portion of thecollected data in the at least one memory module; removing the toolstring from the wellbore; loading the collected data stored in the atleast one memory module in a CPU located at the surface of the earth;and processing the collected data from both the sonic array tool and thepulsed neutron tool in the CPU located at the surface of the earth toobtain selected rock property data about the one or more geologicformations; passing the tool string inside the wellbore casing across atleast one selected cased hole interval; collecting data with the sonicarray tool regarding cement bond in the selected cased hole interval;and processing the collected data from the sonic array tool in the CPUlocated at the surface of the earth to obtain selected data fordetermining cement integrity about the at least one selected cased holeinterval; determining if there is hydraulic zonal isolation betweenportions of the selected cased hole interval; and selecting intervalsfor selective staging of hydraulic stimulation based on the determinedhydraulic zonal isolation.